I have the late model 160gb ipod classic and one day I went to play the music and the settings went back to the original (no shuffle or repeat). Since that time the ipod will not turn off. If I press the menu and select buttons that does not work. Also the forward button is not working and the enable disk (pressing select and play). Everything else is fine, i reset the settings, the songs play but it just does not turn off or advance when button is pressed. All other buttons work. Is this a hard drive issue? I have searched on the internet and there is nothing on this topic.